
Where \(J_f\)  is a Jacobian of \(f\) . We use \(N = 3\times n_s\) , where values of \(n_s\)  are given in Table REF . For all \(n\in \lbrace 0,3,\dots , N-3\rbrace \) , we define \(f_n\)  \(f_{n+1}\)  and \(f_{n+2}\)  using ActNorm [1]}, Flip [2]} and Neural Spline Flows [3]}, respectively. Below, we provide a brief introduction on these three functions. To reduce clutter, we refer to \(z_n\)  as \(z\)  and \(f_n\)  as \(f\) .
